Yamaha adopted the same size structure as the flagship CT-900 Series, based on the proportional relation between diameter and depth, which is "For every 1 inch increase in diameter, increase the depth by 1/2 inch". As a result, Yamaha designers successfully achieved the classical tone and lingering depth which is fundamentally different from that of existing concert toms. The CT-8000 Series offers solid attack and brilliant tone as a whole set, which gives you a higher level of expressivity. This series also has a wide tuning range from high to low register to allow you to produce various types of sound.